Developing these HO Scale lumber loads has been a real challenge. We had to go through several design iterations to get it just right. By just right, we mean taking the pain out of making them, so the hobbyist can maximize their fun! These lumber loads have alighnment pins and receiving holes, so you can assemble them without a hassle. Further, they are modular. The plastic-injected parts can work for a 40-ft flatcar to a 73-ft centerbeam flatcar. Check it out. We are taking pre-orders until December 12, 2016. Estimated delivery is Feb-March 2016.